... oral [by mouth] form only ), granisetron (Kytril, Sancuso), ondansetron (Zofran), palonosetron ( Aloxi), tropisetron (Navoban) , or ramosetron (Nasea) ... this is the preferred treatment, but granisetron or ondansetron may also be used) 2. Dexamethasone on days ...